<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>案例1</title>
</head>

<body>
    <div>

    </div>

    <script>
        var i = iResult = 0

        function sum() {
            for (let i = 0; i < arguments.length; i++) {
                iResult += arguments[i]
            }
            return iResult
        }

        alert(sum(1, 2, 3, 4, 5, 6, 7, 8, 9, 10))
    </script>
</body>

</html>